# 2013

A NNUAL 

# M ONITORING 

# N ETWORK 

# P LAN

S ACRAMENTO 

## M ETROPOLITAN



## A IR 

## Q UALITY 

## M ANAGEMENT 

## D ISTRICT

P ROGRAM 

### C OORDINATION 

### D IVISION



### 777 12 TH 

### S TREET


### , 3 RD 

### F LOOR


### S ACRAMENTO



### , CA 958114 (916) 874

- 4800

AIRQUALITY



### . ORG2013 Annual Monitoring Network Plan July 1, 2013

Page | ii This page is intentionally left blank2013 Annual Monitoring Network Plan July 1, 2013

Page | iii Table of Content

Section 1. Introduction

................................ ................................ ...................... 1

Section 2. Network Operations

................................ ................................ ......... 2

Section 3. Minimum Monitoring Requirements

................................ ................. 9

Section 4. Recent and Proposed Modification to the Network

........................ 14

Section 5. PM Collocation Requirement

................................ ......................... 17

Section 6. Process to Review Changes to PM 2.5 Monitoring Network

............ 17

Section 7. Data Submission Requirements

................................ .................... 18

Section 8. Review of Existing SMAQMD Air Monitoring Sites

........................ 18 Appendix A Comparison of number of PM 2.5 Monitors by are a and population 19 Appendix B Detailed Site information

................................ ............................... 20

B.1 Sacramento

- Branch Center #2

................................ ...................... 20

B.2 Sacramento

- Bercut Dr

................................ ................................ ... 22

B.3 Elk Grove

- Bruceville

................................ ................................ ...... 26

B.4 Sacramento

- Del Paso Manor

................................ ........................ 32

B.5 Sacramento

- El Camino Watt

................................ ......................... 39

B.6 Folsom

- Natoma St

................................ ................................ ......... 41

B.7 Sacramento

- Goldenland Ct.

................................ .......................... 45

B.8 North Highlands

- Blackfoot

................................ ............................. 49

B.9 Rancho Seco

................................ ................................ ................. 52

B.10 Sloughhouse

................................ ................................ ................. 54

B.11 Sacramento Health Dept

- Stockton Blvd

................................ ........ 57

B.12 Sacramento

- 1309 T Street

................................ ............................ 59

Appendix C Near

- Road NO 2 Monitoring

................................ ............................ 63 Appendix D Copy of Approval Letter to Close Sacramento

- El Ca mino/Watt

(AIRS Site #06

- 067

- 0007)

................................ ............................. 772013 Annual Monitoring Network Plan July 1, 2013

Page | iv List of Tables

Table 2

- 1 Purpose and Ove rview of Pollutants Monitored

.................... 6

T able 2

- 2 Monitoring Objective

................................ ............................. 7

Table 2

- 3 T ype of Site and Spatial Scale

................................ ............. 8

Table 3

- 1 Sacramento MSA Design Value and Monitoring

Requirement, Part 1

................................ ........................... 10

Table 3

- 2 Sacramento MSA Design Value and Monitoring

Requirement, Part 2

................................ ........................... 11

Table 3

- 3 PAMS Minimum Mo nitoring Requirement

........................... 12

Table 3

- 4 Sampling Sc hedule

................................ ............................. 13

Table A

- 1 Comparison of Number of PM 2.5 Monitors

.......................... 19

Table C

- 1 AADT of Top Ranking Roadways in Sacramento CBSA

.... 68

Table C

- 2 Model NO X E mission for Sacramento County

..................... 69

Table C

- 3 Complete Matrix of Top Potential Near

- Road Site

(#1

- 5)

................................ ................................ ............. 72

- 73

Table C

- 4 Complete Matrix of Top Potential Near

- Road Site (#6

- 10)

................................ ................................ ...................... 74

- 75

List of Figures

Figure 2

- 1 Counties within Sac ramento

- Arden Arcade

- Roseville,

California

, MSA

................................ ................................ .... 3 Figure 2

- 2 S acramento Non

- attainment Area

................................ ........ 4 Figure 2

- 3 Air Monitori ng Sites in Sacramento County

.......................... 5 Figure C

- 1 Map of Top Potential N ear

- Road Air Monitoring Sites

........ 64 Figure C

- 2 Location of Bercut Dr.

................................ ......................... 65 Figure C

- 3 Location of Potential Site on Bercut Dr.

.............................. 66 Figure C

- 4 Ground View of Potential Site, Looking WSW

.................... 67 Figure C

- 5 Wind Rose Representative of Bercut Dr.

............................ 712013 Annual Monitoring Network Plan July 1, 2013

Page | v List of Abbreviations and Acronyms

AADT Annual average daily traffic

AGL Above ground level

AIR Sacramento

- Airport Road Air Monitoring Site

ANP Annual network plan

ARM Approved Regional Monitor

AQS Air Quality S ystem

BAM Beta Attenuation Monitor

BC Sacramento

- Branch Center #2 Air Monitoring Site

BL General/Background

BRU Elk Grove

- Bruceville Air Monitoring Site

Caltrans California Department of Transportation

CARB California Air Resources Board

CSN Chemical Speciation Network

CFR Code of Federal Regulations

CO Carbon Monoxide

DPM Sacramento

- Del Paso Manor Air Monitoring Site

ECW Sacramento

- El Camino/Watt Air Monitoring Site

EPA U.S Environmental Protection Agency

ER Emission ratio

ERG East ern Research Group, Inc.

FE AADT Fleet equivalent annual average daily traffic

FEM Federal Equivalent Method

FID Flame Ionization Detector

FOL Folsom

- Natoma Air Monitoring Site

FRM Federal Reference Method

GC Gas Chromatography

GOL Sacramento

- Goldenland Court Air Monitoring Site

HC Highest Concentration

IM Source Impact

MET Meteorological sensor

MI Microscale

MS Middle Scale

MSA Metropolitan Statistical Area

NAAQS National Ambient Air Quality Standard

NCORE National Core, a multi

- pollutant ambient monitoring network

NDIR Non

- dispersive Infrared Spectrometry2013 Annual Monitoring Network Plan July 1, 2013

Page | vi NH North Highlands

- Blackfoot Air Monitoring Site

NMHC Non

- Methane Hydrocarbon

NO2 Nitrogen Dioxide

NOX Oxides of Nitrogen

NOY Reactive Oxides of Nitrogen

NPAP National Performance Audit Program (Criteria pollutant monitors)

NPEP National Performance Evaluation Program (PM2.5 FRM)

NS Neighborhood Scale

O3 Ozone

PAMS Photochemical Assessment Monitoring Sites

Pb Lead

PEP Performanc e Evaluation Program (PM2.5 FRM)

PM Particulate Matter

PM2.5 Particulate Matter 2.5 micron

PM10 Particulate Matter 10 micron

PM

- Coarse Particulate Matter > 2.5 micron and < 10 micron (PM10

- 2.5)

POC Parameter occurrence code

PPB Parts per Billion

QA Quality Assurance

QAPP Quality Assurance Project Plan

QMP Quality Management Plan

RC Representative Concentration

RH Relative Humidity

RS Rancho Seco monitoring site

RTI Research Triangle Institute

SASS PM2.5 Speciation sampler

SCK Sacramento Health Department

- Stockton Blvd. Air Monitoring Site

SFNA Sacramento Federal Nonattainment Area

SIP State Implementation Program

SJV San Joaquin Valley

SLAMS State and Local Air Monitoring Sites

SLU Sloughhouse Air Monitoring Site

SMAQM D Sacramento Metropolitan Air Quality Management District

SO2 Sulfur Dioxide

SO4 Sulfate

SPM Special Purpose Monitoring

SRD Solar Radiation

SSI Size Selective Inlet (PM10 FRM sampler)

STN Speciation Trends Network

TAPI Teledyne Advanced Pollution Instrumentation

TCCR Transportation Corridor Concept Report2013 Annual Monitoring Network Plan July 1, 2013

Page | vii TEI Thermo Environmental Instruments

TEOM Tapered Element Oscillating Microbalance

THC Total Hydrocarbon

TNMHC Total Non

- methane hydrocarbon

TST Sacramento

- T Street Air Monitoring Site

US Urban Scale

UV Ultraviolet

VCAPCD Ventura County Air Pollution Control District

VOC Volatile Organic Compounds

VSCC Very Sharp Cut Cyclone

WD Wind Direction

WF Welfare Based

WS Wind Speed2013 Annual Monitoring Network Plan July 1, 2013

Page | viii This page is intentionally left blank

### Section 1. Introduction

State and Local agencies that conduct ambient air monitoring for regulatory purposes are required, by Title 40, Code of Federal Regulations, Part 58.10, to submit an Annual Monitoring Network Plan to the U.S. Environmental Protection Agency (EPA), no later than July 1st, each year. The report must contain specific monitoring network information and the report must be presented for a

30

- day public review period prior to submittal to EPA. This report covers the period: January 1, 2012

- December 31, 2012

.

Th e primary purpose of this ambient air monitoring network report is to document the existing Sacramento County State and Local Air Monitoring sites (SLAMS), National Core (NCore) multi

- pollutant monitoring stations, Chemical Speciation Network (CSN), Specia l Purpose Monitoring (SPM), and Photochemical Assessment Monitoring (PAMS) sites, operated by our District and California Air Resources Board (CARB), and to show that the ambient air monitoring network meets the requirements of 40 CFR 58, including Appendi x A, C, D, and E, where applicable. The report will include the Federal Reference Method (FRM), Federal Equivalent Method (FEM), and Approved Regional Method (ARM) monitors. This report also discusses additional SPM monitoring instrumentation being opera ted, such as Aethalometers and Nephelometers, and surface/upper air meteorological sensors required for the PAMS program. The secondary purpose of this report is to discuss proposed changes (additions, relocations, and terminations of non

SPM monitors) in the ambient air monitoring network that may be proposed to occur within an 18 month period following submittal of this report.

This report is not an "in depth" analysis of the local air monitoring network design. An in

- depth analysis of the monitoring ne twork is required every 5 years to determine, at a minimum, if the network meets the monitoring objectives defined in 40 CFR Part 58 Appendix D, whether new sites are needed, whether existing sites are no longer needed, and whether new technologies are

app ropriate for incorporation in to the ambient air monitoring network.

This network plan focuses on the monitors that are operated within Sacramento County , which is a part of Sacramento

- Arden Arcade

- Roseville Metropolitan Statistical Area (MSA) . For detai ls on monitors in neighboring counties within the

MSA , please refer to the latest California Air Annual Monitoring Network Report

for Small District in California < http://www.arb.ca.gov/aqd/amnr/amnr2012.pdf >.2013 Annual Monitoring Network Plan July 1, 2013

Page | 2 

### Section 2. Network Operations

Sacramento Co unty is located in the middle of California’s Central Valley and at the southern end of the Sacramento Valley. Sacramento County is the most populous part of the Sacramento

- Arden Arcade

- Roseville, California

, MSA ( Sacramento MSA) . The Sacramento MSA also includes the western sections of Placer and El Dorado County, Yolo County, and parts of Solano and Sutter

Counties. According to the latest U.S. Census estimates, Sacramento MSA is

the 25 th largest MSA in the U.S. by population. It has 2.2 million people, of which 1.4 million of those reside in Sacramento County. Figure 2

- 1 shows a map of

Sacramento MSA.

The Sacramento MSA is a non

- attainment area for the Federal 8hr O 3 standard

and is referred to as Sacramento Federal Nonatta inment Area (SFNA) . The area

is shown in Figure 2

- 2

. While Sacramento is designated as a federal non

attainment area for PM 10 and 24

- hr PM 2.5 , it has met both standards and is currently working with EPA to re

- designate the attainment status. Sacramento County is in attainment for the Federal CO, NO 2 , and SO 2 standards. The California Air Resources Board recommended that EPA designate Sacramento County as unclassified for the 2008 Federal Pb standard.

SMAQMD operates ten air monitoring sites within Sacramento County

. While

m ost sites operate a suite of instruments to monitor multiple pollutants and meteorological condition

, only a few sites monitor a specific pollutant

. Each site has monitors that belong to one or more national monitoring network s , such as

SLAMS , PAMS, NCore and CSN, or is an SPM

. In addition to SLAMS and
PAMS, SMAQMD operates one of the 80 NCore sites and one of the 54 PM 2.5 CSN trend sites. Figure 2

- 3 shows the location of these monitoring sites, which

include s one site that is operated by ARB : Sacramento

- T Street

. Table 2

- 1 lists

the type of monitoring network each site belongs to and the pollutants monitored

at each site.

The primary focus of the current ambient air monitoring network is the collection

of O 3 and photochemica l pollutant precursors such as NO X and VOC, and PM 2.5 data to support SIP development, attainment/non

- attainment decisions, public notification, and data for air quality modeling efforts. The network is designed to

meet three basic monitoring objectives: ( 1) provide air pollution data to the general public in a timely manner; ( 2) support compliance with ambient quality standards and emissions strategy development; and ( 3) support air pollution research studies. To support these monitoring objectives there are a variety of types of monitoring sites including sites located to determine the highest pollutant concentration, the representative concentrations in areas of high population density, the impact of major pollution emissions sources, the general backgr ound concentration levels, the extent of pollutant transport, and impacts on visibility, vegetation, and other welfare

- based impacts

. An overview of monitoring objective is in Table 2

- 2.2013 Annual Monitoring Network Plan July 1, 2013

Page | 3 The physical siting of an air monitoring station must achieve a spatial scale of representativeness that is consistent with the monitoring objective of the monitor. The spatial scale results from the physical location of the site with respect to the pollutant sources. It es timates the size of the area surrounding the monitoring site that experiences uniform po llutant concentrations. Table 2

- 3 summarizes

the site type and spatial scale. For in

- depth details on individual monitors, including monitoring objective and statement of purpose, see Appendix B

, Detailed Site Information . S ite type and spatial scale description can be found in Appendix D to 40 CFR 58.

Figure 2

- 1

Counties within Sacramento

- Arden Arcade

- Roseville, California, MSA

P ARTIAL SCREENSHOT OF G OO GLE M AP2013 Annual Monitoring Network Plan July 1, 2013

Page | 4 Figure 2

- 2

Sacramento Non

- attainment Area2013 Annual Monitoring Network Plan July 1, 2013

Page | 5 Figure 2

- 3 Air Monitoring Sites in Sacramento County

P ARTIAL SCREENSHOT OF G OOGLE M AP

A. Sacramento

- Branch Center Rd #2 H. North Highlands

- Blackfoot Way

B. Proposed Monitoring Site 1 I. Rancho Seco

C. Elk Grove

- Bruceville Rd J. Sloughhouse

D. Sacramento

- Del Paso Manor K. Sacramento

- Health Dept.

E. Sacramento

- El Camino Watt L. Sacramento

- T Street (operated by CARB)

F. Folsom

- Natoma St M. Walnut Grove Tower (Monitors ozone and
meteorology aloft) G. Sacramento

- Goldenland Ct.

1 Proposed site is the near

- road site to be operational by 1/1/14, see Section 42013 Annual Monitoring Network Plan July 1, 2013

Page | 6 Table 2

- 1

Purpose and Overview of Pollutants Monitored2013 Annual Monitoring Network Plan July 1, 2013

Page | 7 Table 2

- 2 Monitoring Objective

Legend:

N

- NAAQS Comparison

P

- Public Info

R

- Research2013 Annual Monitoring Network Plan July 1, 2013

Page | 8 Table 2

- 3 Type of Site and Spatial Scale

Legend:

Site Type :

BG

- General/Background PE

- Population Exposure

ED

- Extreme Downwind QA

- Quality Assurance

HC

- Highest Concentration RT

- Regional Transport

MO

- Max O 3 Concentration SO

- Source Oriented

MP

- Max Precursor Emissions UP

- Upwind Background

OT

- Other WF

- Welfare Related Impacts Spatial Scale : MC

- Microscale

MD

- Middle Scale

NS

- Neighborhood Scale

RS

- Regional Scale

US

- Urban Scale2013 Annual Monitoring Network Plan July 1, 2013

Page | 9 

### Section 3. Minimum Monitoring Requirements

Depending on the specific pollutant, the minimum number of monitors required for each pollutant is based on the one or more applicable factors as described in Appendix D to 40 CFR 58: MSA population , pollutant design value, pollutant maximum concentration, attainment status, annual average daily traffic (AADT)

, state implantation plan (SIP) , maintenance plan, population weighted emission

index (PWEI) , and EPA’s national emission inventory (NEI) data.

Sacramento MSA meets or exceeds minimum monitoring requirement for a ll criteria pollutants

– O 3 , PM 2.5 ( manual and continuous methods), PM 10 , NO 2 , SO 2 , CO, and Pb

. Details of the minimum monitoring requirements of all criteria pollutants are provided in tables 3

- 1 and 3

- 2

. Monitors in the se tables represent

Sacramento MSA (or CBSA, ID#40900) . As mentioned in Section 2, Sacramento MSA has 2.2 million residents (U.S. Census, 2010) and is composed of El
Dorado, Placer, Sacramento, and Yolo Counties.

In addition to the criteria pollutants, Sacramento MSA also meets minimum monitoring requirement for PAMS, which is required due to the severity of ozone

non

- attainment classification in Sacramento MSA

. Currently, there is one of

each PAMS t ype I, II, and III sites. There is also a secondary type II site. Table

3

- 3 lists th e instruments operating at each PAMS.

Furthermore, all instruments operated by SMAQMD meets operating schedule requirement as specified in 40 CFR Part 58. 12. As required, a ll continuous monitors reports hourly data. Sampling schedule for n on

- continuous monitors is

summarized in Table 3

- 4 . D esign v al ue is included in the table if it is needed to maintain a specific schedule, for non

- continuous monitors. All monitors are operated year

- round except VOC and carbonyl samplers at PAMS and special purpose PM 2 .5 monitors at Sloughhouse and Rancho Seco. For details on sampling season and operating schedule, please refer to Appendix B.2013 Annual Monitoring Network Plan July 1, 2013

Page | 10 Table 3

- 1 Sacramento MSA Design Value and Monitoring Requirement, Part 1

O 3 8

- hr 0.095 ppm Folsom

- Natoma St (06

- 067

- 0012) 2 17 7 0

PM 2.5 24

- hr

(FRM) 31 μg/m 3 Sacramento

- Del Paso Manor (06

- 067

- 0006) 3 5 3 0 Annual (FRM) 9.5 μg/m 3 Sacramento

- Del Paso Manor (06

- 067

- 0006)

Continuous N/A 2 9 4 0

PM 10 69 μg/m 3

(54% of NAAQS) Sacramento

- Branch

Center #2 (06

- 067

- 0284) 2

- 4 10 6 0

PM 10

- 2.5 N/A Located at Sacramento

Del Paso Manor (06

- 067

- 0006) 1 1 1 02013 Annual Monitoring Network Plan July 1, 2013

Page | 11 Table 3

- 2 Sacramento MSA Design Value and Monitoring Requirement, Part 2

NO 2 Near

- road Max annual average daily traffic count : 246,000 (2011 , Caltrans )

Near

- road monitoring requirement will be satisfy by the Proposed Monitoring Site, see Appendix C

NO 2 monitor at Sacramento

- Del Paso Manor (06

- 067

- 0006) serves as both

PAMS and area

- wide monitor 1 0 0 1 A

Area

- wide 1 8 6 0

SO 2 Total SO 2 : 1,774 tons (NEI, 2008)

Population Weighted Emission Index: 3,903 million persons

- tons per year

Monitor at Sacramento

- Del Paso Manor satisfy NCore and SO 2 monitoring requirements 1 1 1 0

CO Trace monitor at Sac ramento

- Del Paso Manor (06

- 067

- 0006) satisfy the NCore requirement

, which also satisfy the 1 monitor requirement in the Maintenance

Plan 2 4 4 1 A

Pb Non

- source

oriented Pb monitor at Sac ramento

- Del Paso

Manor (06

- 067

- 0006) satisfy the NCore requirement 1 1 B 1 0

Source

oriented No industrial source > 0.5 tpy , airport

source < 1.0 tpy (NEI, 2008) 0 0 0 0

A Located at new near

- road monitoring site, to be operational by 1/1/2014, as required by 40 CFR

Part 58

B Another lead monitor is in operation at Roseville

- N Sunrise Ave (06

- 067

- 0006) but does not

count toward monitoring requirement because it is not a required site2013 Annual Monitoring Network Plan July 1, 2013

Page | 1 2 Table 3

- 3

PAMS Minimum Monitoring Requirement

O 3 4 A 4    

CO 1 2  

NO X 2 4    

NO Y 1 1  B 

Speciated VOC 2 2  

Carbonyl Sampling 1 1 

Surface Met 4 A 4    

Upper Air Meteorology 1 1 

A This requirement is depen dent on the number of PAMS site, see Appendix D to 40 CFR 58

B Per Appendix D, t his monitor does not count toward PAMS requirement but is required for
NCore; NO Y for PAMS must be at Type I or III site2013 Annual Monitoring Network Plan July 1, 2013

Page | 13 Table 3

- 4 Sampling Schedule2013 Annual Monitoring Network Plan July 1, 2013

Page | 14 

### Section 4

. Recent and Proposed Modification to the

Network

This section discusses recent and proposed modification to the monitoring network. As required by 40 CFR Part 58.10, modifications within the next 18 months are included. While the District is not requesting approval for modification through this network plan, the modifications discussed in this plan

include the following:

Sacramento

- Bercut Dr. (Proposed Site) Bercut Dr. is tentatively selected as the near

- road monitoring site contingent on approval from the EPA. Final revision to ambient NO2 monitoring requirement (EPA Docket ID EPA

- HQ

- OAR

- 2012

- 0486) requires this site to be operational by January 1, 2014. Ap pendix C to this network plan discusses site selection

criteria and the rationale to locate the near

- road monitoring site at this location

.

As per Appendix D to 40 CFR Part 58, this site will monitor the required pollutants

– NO 2 and CO

– as well as opti onal pollutants and meteorological

parameters

– black carbon, wind direction, wind speed, temperature, and relative humidity. In anticipation of the upcoming PM 2.5 near

- road monitoring requirement

, January 1, 2017 deadline for Sacramento CBSA per final rule of

PM 2.5 NAAQS review (78 FR 3086) , the District will also install a PM 2.5 monitor.

Appendix B lists the details such as site type and objective for planned

instruments at this site

.

Elk Grove

- Bruceville Rd. The District is considering to disconti nue the speciated VOC measurement. Appendix D to 40 CFR Part 58 requires only two speciated VOC measurement sites per PAMS network area , and Sacramento

- Del Paso Manor (type II PAMS)

and Folsom

- Natoma St. (type III PAMS) satisfy this requirement. Speciate d VOC measurement collected at this site is insignificant due to its low, background

concentration.

Sacramento

- Del Paso Manor

T he District install ed a PM 2.5 FEM continuous monitor in September 2012 to replace the non

- FEM monitor because the PM 2.5 2011design value was within

95% of NAAQS

. As allowed by 40 CFR 58.20 , the FEM monitor was installed as a special purpose monitor (SPM). Comparability test concludes that the FEM is not comparable to a collocated FRM monitor due to seasonal variability. Specifically, the multiplicative bias was outside of acceptable limit during non

winter months (40 CFR Part 58.35 defines winter as ― coolest three or four months of the year at the site ‖). The comparability test was performed in

accordance to 40 CFR Part 58.35. In April 2013, the District relocated the PM 2.5 FEM monitor to Folsom

- Natoma St, where the monitor will continue to operate as

an SPM.

Throughout 2012 and 2013, t he existing PM 2.5 FRM monitor remained the primary PM 2.5 sampler for comparison to the annual ambient air quality standard

.2013 Annual Monitoring Network Plan July 1, 2013

Page | 15 In December 2012, the FRM monitor’s sampling frequency increased from 1 in 3 days to daily sampling to provide daily PM 2.5 data that is comparable to the

NAAQS.

The District is evaluating to sh ut down the Nephelometer. The monitor was originally installed in 1999 for the California Regional Particulate Air Quality Study. After the study ended in 2001 , the monitor was not removed and became

a special purpose monitor

.

Sacramento

- El Camino/Watt In September 2011, EPA approved the District’s site termination request due to a street/sidewalk improvement project in 2012 that requires termination or relocation of this air monitoring station. The termination process was pos tponed, as the street/sidewalk project was delayed until April 2013. This site will be terminated in early 2013 when the project proceeds. A copy of the approval

letter is attached in Appendix D.

Folsom

- Natoma St

In April 2013, the PM 2.5 non

- FEM continu ous monitor was relocated to the Sloughhouse site and was replaced by a continuous FEM monitor. The FEM monitor will operate as an SPM while the District performs a data quality

assessment. This special purpose monitor is not eligible for comparison to

N AAQS because 40 CFR Part 58.20 allows SPM operating less than 24 months to be excluded from NAAQS comparison.

Sacramento

- Goldenland Ct The District is evaluating to terminate this site. Sacramento

- Goldenland Ct. is a redundant secondary type II PAMS, as nearby Sacramento

- Del Paso Manor is a primary type II PAMS that measures a full suite of VOC. Furthermore, preliminary analysis shows this site does not measure the highest concentration of criteria pollutant s. If this site is terminated, there are still enough number of monitors within this CBSA to satisfy the monitoring requirement in Appendix D to

40 CFR Part 58.

North Highlands

- Blackfoot Way The District is considering to reorganize this site. North Hi ghland

- Blackfoot Way was originally sited to support a proposed power plant project at McClellan AFB, which was canceled during the early 1980s. The District is planning to request approval for termination of the PM 10 SSI sampler. Also, the district is e valuating to adapt a seasonal sampling schedule for O 3 and CO. Staff resource used to support this air monitoring site would be reassign ed to support the new NO 2 near roadway monitoring sites.2013 Annual Monitoring Network Plan July 1, 2013

Page | 16 Sacramento Health Dept.

- Stockton Blvd.

The District will submit a request for termination of the PM 10 TEOM and PM 10 SSI monitors. The TEOM monitor is not required, and its data is not used for forecasting or analysis due to its negative bias during the winter time when there

is an abundance of wood combustion

. The SSI monitor also is not required

because there is a sufficient number of SSI monitors in Sacramento MSA to meet the minimum monitoring requirement.

Also, the District is considering to terminate the PM 2.5 FRM monitor. This monitor

is redundant as it collects the same PM 2.5 data as the nearby Sacramento

- T

Street.

Sloughhouse

A non

- FEM PM2.5 BAM monitor was relocated from Folsom

- Natoma St. in April

2013 . It replace s the existing PM2.5 E

- BAM monitor

.2013 Annual Monitoring Network Plan July 1, 2013

Page | 17 

### Section 5. PM Collocation Requirement

Quality Assurance Requirements for SLAMS found in Appendix A to 40 CFR Part 58 requires collocation for PM 10 , PM 2.5 FRM and FEM

, and PM 10

- 2.5 monitors. Section 3 in the appendix states that each method within a ―primary quality

assurance organization (PQAO) must have 15 percent of the monitors

collocated.‖

SMAQMD is a small air quality management district and does not maintain a PQAO. Collocated monitors operated by SMAQMD are part of the CARB PQAO. Currently, PM 2.5 FRM and PM 10 FRM mon itors at Sacramento

- Del Paso Manor are collocated. For complete details on PM collocation, please refer to the Section 6, Required Quality Assurance of the Monitoring Program, in the Annual Monitoring Network Report for Small Districts in California dated June 2012 prepared by CARB ( http://www.arb.ca.gov/aqd/amnr/smnetrpt1 2 .pdf ).



### Section 6. Process to Review Changes to PM 2.5 

### Monitoring

Network

40 CFR Part 58 requires that this Annual Monitoring Plan to ― document how State and Local Agencies provide for the review of changes to a PM 2.5 monitoring network that impact the location of a violating PM 2.5 monitor or the creation/change to a community monitoring zone, including a description of the

propo sed use of spatial averaging for purposes of making comparisons to the

annual PM 2.5 NAAQS as set forth in Appendix N to Part 58 in 40 CFR 58. The affected State or local agency must document the process for obtaining public comment and include any comment s received through the public notification process within their submitted plan. ‖ Note that spatial averaging does not apply in California because the state and local air monitoring districts collectively elected not to establish community monitoring zone in the 1990s.

An informational comparison, not required by air monitoring regulation, on the

number of PM 2.5 monitors by area and population has been included. The analysis can be found in Appendix A.

The general process for any proposed change to the m onitoring network is that the proposed change is discussed in this Annual Monitoring Plan. Then, during spring, each year, this Annual Monitoring Plan will be sent by SMAQMD to CARB/TSD for review and comment. Prior to June 1, each year, this report will be posted to our District Website for no less than 30 day s , for public review and

comment. During late June, each year, the finalized Annual Monitoring Plan and

comments on the Plan will be forwarded to EPA

- Region IX, prior to the July 1

deadline.2013 Annual Monitoring Network Plan July 1, 2013

Page | 18 

### Sect ion 7. Data Submission Requirements

CARB submits precision, accuracy, and raw data for all District operated monitors in 2012. CARB is also the lead agency on annual data certification. The following submission dates are provided by CARB.

 2012 Precision/Accuracy reports submitted to AQS: May 2013

 2012 Annual data certification submitted: May 2013 (by CARB)



### Section 8. Review of Existing SMAQMD Air Monitoring

Sites

For each monitor at each monitoring site, the tables in Appendix B were used to

de termine if each monitor meets 40 CFR 5 8 requirements, including Appendix A (QA Requirements), C (FRM/FEM/ARM Requirements), D (Network Design Criteria), and E (Probe Sitting Criteria), when applicable. The SMAQMD ambient air monitoring network meets the requirements of 40 CFR 58 inc luding Appendix A, C, D, and E.2013 Annual Monitoring Network Plan July 1, 2013

Page | 19 

### Appendix A Comparison of number of PM 2.5 

### Monitors by

area and population

The Sacramento MSA has a total of 16 PM2.5 monitors: 5 FRM, 9 BAM, and 2

SASS monitor. 8 of the 16 PM2.5 monitors are located in areas of high population density to monitor for population exposure.

To illustrate how the Sacramento MSA compares to other air districts in terms of monitoring PM2.5, a comparison of the number of PM2.5 monitors by geographic area and populati on in several air districts in California is shown in the table

below.

Table A

- 1

Comparison of Number of PM2.5 Monitors

District Square

Miles Population

(millions) Number of

PM 2.5 Monitors PM 2.5 Monitors

per person PM 2.5

Monitors

per square
mile
Bay Area 5,340 6.8 2 0 1 per 340,000 1 per 267

Sacramento

MSA 5,309 2. 1 1 6 1 per 131,350 1 per 332

South

Coast 15,000 16 .5 3 3 1 per 500,000 1 per 4 55

San Joaquin Valley 25,000 3. 9 26 1 per 150,000 1 per 962

The numbers of PM2.5 monitors per person show that the Sacramento MSA has a higher than average number of monitors per person. The numbers of PM2.5 monitors per square mile show that the Sacramento MSA has a higher than average number of monitors per square mile.

However, caution should be used when doing these types of comparisons, as

these four Districts have different ratios of urbanized area vs. rural areas and rural vs. urban population, etc. For example, Bay Area has a similar size (number of square miles) compared to the Sacramento MSA, but B ay Area has a higher population density per square mile, in the urbanized areas. San Joaquin Valley has a highest amount of area, more rural population, and lowest population density per square mile. In addition, San Joaquin Valley has the typical PM2.5 sources of motor vehicles and residential wood combustion, but it also has agricultural sources of PM2.5. Thus, the size of a monitoring network is largely determined by the number of monitors needed to satisfy the local/regional monitoring needs, dependi ng upon the unique featur es and needs of that District.2013 Annual Monitoring Network Plan July 1, 2013

Page | 20 

### Appendix B Detailed Site information

Detailed site information covered in this appendix reflects air monitoring operation from January 1, 2012

- December 31, 2012.



### B.1 Sacramento

- Branch Center #2

Sacramento

- Branch Center #2 is a PM10 SSI site. This site was established, in early 2006, to replace the former Sacramento

- Branch Center site, which was approximately one

- quarter mile to the north.

The objective of this site is to measure the representat ive concentration, as documented in the original site initiation reports filed in the late 1980s. The old site was relocated since nearby trees were a flow obstacle.

Site Name Sacramento

- Branch Center #2

AQS Site No. 06

- 067

- 0284 Geographic Coordinates 38.553611°,

- 121.336111° (NAD27)

Location Rooftop of building in middle of County
Maintenance Yard, located 10 miles east

southeast of downtown Sacramento.

Address 3847 Branch Center Road, Sacramento, CA

95827 County Sacramento Distance from roadway 40 m Average Daily Traffic 26,274 (Bradshaw Road) Vehicles/Day (SACDOT, 2010)

Ground Cover Paved Representative Area (MSA) Sacramento

-- Arden

- Arcade

-- Roseville, CA2013 Annual Monitoring Network Plan July 1, 2013

Page | 212013 Annual Monitoring Network Plan July 1, 2013

Page | 22 

### B.2 Sacramento

- Bercut Dr

This is a proposed near

- road monitoring site. Located one mile from Downtown Sacramento, this site is expected to measure the highest NO 2 concentration due
to the emission from car and truck on Interstate 5, which is about 20 m from the

site.

Site Name Sacramento

- Bercut

AQS Site No. Unknown Geographic Coordinates 38.593328 ° N,

- 121.503728 ° W

Location On the downwind side of Interstate 5, one

mile north

- northwest of downtown

Sacramento.

Address Bercut Dr, Sacramento, CA County Sacramento Distance from Roadway; Average Daily Traffic Interstate 5: 20 m; 1 86,000 Vehicles/Day (Caltrans, 2011 ) Bercut Dr.: 3 m; unknown (representative

count not available) Bercut Dr. & Bannon St.: 313 m; 2,709 (City

of Sacramento, 2012)

Ground Cover Pavement, with vegetation Representative Area (MSA) Sacramento

-- Arden

- Arcade

-- Roseville, CA2013 Annual Monitoring Network Plan July 1, 2013

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Page | 26 

### B.3 Elk Grove

- Bruceville

Bruceillve air monitoring site is s ited in a rural area 4 miles south of Elk Grove,

CA , and 20 miles south of Downtown Sacramento. It was initiated in 1992 to replace the former Sacramento

- Meadowview Road O 3 monitoring site.

This site is the upwind O 3 and ozone precursor monitoring site for our network

, also known as a PAMS Type I site. It measures O 3 , NO 2 , total NMHC, speciated VOC (episodic only), PM 2.5 BAM, WD, WS, T MP

, RH , SRD, UV r adiation,

p recipitation, and a tmospheric pressure

Adjacent to the air monitoring site is the Franklin Field Radar Wind Profiler (RWP) for measurement of u pper level winds and temperature. This RWP is operated year

- round. Collection of u pper air meteorology data is a requirement for the PAMS program.

Site Name Elk Grove

- Bruceville

AQS Site No. 06

- 067

- 0011 Geographic Coordinates 38.302630°

- 121.420850° (WGS84)

Location Rural area located 4 miles south of Elk Grove,

CA.

Address 12490 Bruceville Rd, Elk Grove, CA 95758 County Sacramento Distance from roadway 76 m Average Daily Traffic 1,407 Vehicles/Day (SACDOT, 2011)

Ground Cover Vegetated Representative Area (MSA) Sacramento

-- Arden

- Arcade

-- Roseville, CA2013 Annual Monitoring Network Plan July 1, 2013

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Page | 32 

### B.4 Sacramento

- Del Paso Manor

This site has been in existence since 1979. This air monitoring site is the largest air monitoring site in the Sacramento Valley air basin . This site is one of the largest air monitoring site s in Northern California , in terms o f number of parameters measured

.

It measures O 3 , CO (trace level) , NO 2 , NOy, SO 2 (trace level), NMHC, speci ated VOC (C2

- C12), Carbonyl, PM 10 (SSI

- main and collocated )

, PM 10 TEOM, PM 10 coarse, Pb

- PM 10 , PM 2.5 FRM ( main and collocated )

, PM 2.5 BAM, Speciated PM 2.5 ( SASS ) , Black Carbon (Aethalometer), Scattering Coefficient (Nephelometer),

WD

- resultant, WS

- resultant, ambient temperature, relative humidity, and total

solar radiation.

This site is a PAMS Type II primary site and a PM 2.5 Chemical Speciation

Net work (CSN) site. This site is the current PM 2.5 design value site for this MSA.

In October 2009, EPA

- Region IX approved this monitoring site as an NCore site.

This is one of six NCore sites operating in California. To accommodate the NCore monitoring i nstrumentation, the District expanded the size of the existing roof deck, added a 10 meter NOY converter tower, and upgraded the electrical capacity in Spring 2010.

Site Name Sacramento

- Del Paso Manor

AQS Site No. 06

- 067

- 0006 Geographic Coordinates 38.613804°,

- 121.368007° (WGS84)

Location Neighborhood park located 7 miles east

northeast of downtown Sacramento.

Address 2701 Avalon Drive, Sacramento, CA 95821 County Sacramento Distance from roadway 30 m Average Daily Traffic 1,000 Vehicles/Day (estimated)

Ground Cover Vegetated Representative Area (MSA) Sacramento

-- Arden

- Arcade

-- Roseville, CA2013 Annual Monitoring Network Plan July 1, 2013

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Page | 39 

### B.5 Sacramento

- El Camino Watt

Sacramento

- El Camino/Watt has been in existence since 1981. This site is a

micro

- scale CO monitoring station.

In September 2011, EPA approved the District’s site termination request due to a street/sidewalk improvement project in 2012 that requires termination or relocation of this air monitoring station. The site termination is contingent on the

constr uction project obtaining funding and being approved to proceed.

Site Name Sacramento

- El Camino/Watt

AQS Site No. 06

- 067

- 0007 Geographic Coordinates 38.61°,

- 121.38° (NAD27)

Location Shopping Center located 6.5 miles east

northeast of downtown Sacramento.

Address 3535 El Camino Avenue, Sacramento, CA

95825 County Sacramento Distance from roadway 2 m Average Daily Traffic 18,891 Vehicles/Day (SACDOT, 2010)

Ground Cover Paved Representative Area (MSA) Sacramento

-- Arden

- Arcade

-- Roseville, CA2013 Annual Monitoring Network Plan July 1, 2013

Page | 402013 Annual Monitoring Network Plan July 1, 2013

Page | 41 

### B.6 Folsom

- Natoma St

This site is in operation since 1996. This s ite replaced the former Folsom

Liedesdoff Street site. Approximately 20 miles northeast of Downtown
Sacramento, Folsom

- Natoma site is the maximum summertime O 3 monitoring

site within Sacramento County, for days with the prevailing afternoon southwesterly winds.

This site measures: O 3 , NO 2 , PM 2.5 BAM, Total NMHC, S peciated VOC, WD, WS, Temp, RH , and SRD.

This site is a PAMS Type III site

.

Site Name Folsom

- Natoma Street

AQS Site No. 06

- 067

- 0012 Geographic Coordinates 38.683304°,

- 121.164457° (WGS84)

Location Folsom City Hall (parking lot), located 20

miles east

- northeast of downtown

Sacramento.

Address 50 Natoma Street, Folsom, CA 95630 County Sacramento Distance from roadway 183 m Average Daily Traffic 20,891 Vehicles/Day @ Natoma St. & Riley St. (City of Folsom, 2009)

Ground Cover Vegetated Representative Area (MSA) Sacramento

-- Arden

- Arcade

-- Roseville, CA2013 Annual Monitoring Network Plan July 1, 2013

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Page | 45 

### B. 7 Sacramento

- Goldenland Ct.

This site was established in late 2008 to replace the former Airport Rd. monitoring site, which was one mile away

.

This site measures O 3 , CO, NO 2 , Total NMHC, PM 10 , WD, WS, Temp, RH, and

SRD.

Site Name Goldenland Court

AQS Site No. 06

- 067

- 0014 Geographic Coordinates 38.650716°,

- 121.506650° (WGS84)

Location Site located 5 miles north of downtown
Sacramento, in a residential/commercial

area.

Address 68 Goldenland Court, Sacramento, CA

95834 County Sacramento Distance from roadway 120 m Average Daily Traffic 750 Vehicles/Day (Estimated)

Ground Cover Vegetated Representative Area (MSA) Sacramento

-- Arden

- Arcade

-- Roseville, CA2013 Annual Monitoring Network Plan July 1, 2013

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Page | 49 

### B.8 North Highlands

- Blackfoot

North Highlands

- Blackfoot has been in existence since 1979. It is a Special Purpose Monitoring site for O 3 , CO, and NO 2 . This site is a SLAMS site for PM

10 SSI. SO 2 was terminated in late 2010.

This entire site was designated as SPM upon its establishment. The original site objective was to collect data in suppo rt of a proposed power plant project (Prevention of Significant Deterioration) at McClellan Air Force Base, which was

located 3 miles southwest of the site. The purposed power plant project was canceled during the early 1980’s. The Air Force Base was clo sed in 2001.

During an annual review of network design in the mid

- 1990s, the District needed

additional NAMS sites for SO 2 and PM 10 to meet minimum monitoring requirements. Thus, the designation of the SO 2 and PM 10 monitors at North Highlands was changed from SPM to NAMS , which is now categorized as

SLAMS

.

Site Name North Highlands

- Blackfoot

AQS Site No. 06

- 067

- 0002 Geographic Coordinates 38.71209°,

- 121.38109° (WGS84)

Location Residential area located 11 miles north

northeast of downtown Sacramento.

Address 7823 Blackfoot Way, Antelope, CA 95843 County Sacramento Distance from roadway 100 m Average Daily Traffic 1,000 Vehicles/Day (Estimated)

Ground Cover Paved (to north), vegetated (to south) Representative Area (MSA) Sacramento

-- Arden

- Arcade

-- Roseville, CA2013 Annual Monitoring Network Plan July 1, 2013

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Page | 52 

### B.9 Rancho Seco

This outlying site is the furthest away from urban area. It was established in 2008 as a seasonal PM2.5 special purpose monitoring site. The PM2.5 data

collected during the months of November through March is used for the South Sacramento County Winter PM2.5 Study.

This study is extended due to poor data capture rate at the beginning of the study period.

Site Name Rancho Seco

AQS Site No. NA Geographic Coordina tes 38.343812°,

- 121.109977° (WGS84)

Location Located at former Rancho Seco Nuclear

Power Plant in rural area located 27 miles

southeast of downtown Sacramento.

Address No street address, Herald, CA 95638 County Sacramento Distance from roadway Approximately 75 feet Average Daily Traffic 500 Vehicles/Day (estimated)

Ground Cover Vegetated Representative Area (MSA) Sacramento

-- Arden

- Arcade

-- Roseville, CA2013 Annual Monitoring Network Plan July 1, 2013

Page | 532013 Annual Monitoring Network Plan July 1, 2013

Page | 54 

### B. 10 Sloughhouse

Located in a rural area 16.5 miles southeast of Downtown Sacramento, t his site

measures O 3 , w ind d irection, w ind s peed , and PM 2.5

.

Sloughhouse was established in 1997 as a seasonal (April

- October) O 3 special

purpose monitoring site to measure elevated afternoon O 3 concentrations, under northwesterly winds, in support of the District's summer Spare the Air (O 3 episodic control measure) program. It was sited to cover ―data gaps‖ in the O 3 monitoring network, which is used for forecasting summer AQI levels.

A tree 10 m southeast of the O 3 inlet was removed in May 2011. Since the site now complies with Appendix E (Probe and Monitoring Path Siting Criteria), the O 3 monitor was re

- classified from SPM to SLAMS.

Since November 2008, seasonal (November

- February) monitor ing for PM 2.5 is conducted at this site. A special purpose PM 2.5 E

- BAM monitor collects data in support of the South Sacramento County Winter PM 2.5 study. This study has been extended, due to the extremely low data capture rates during the 2008 and

2009 winter seasons

Site Name Sloughhouse

AQS Site No. 06

- 067

- 5003 Geographic Coordinates 38.494475°,

- 121.211131° (WGS84)

Location Fire Station in rural area located 16.5

miles east

- southeast of downtown

Sacramento.

Address 7520 Sloughhouse Road, Sloughhouse,

CA 95683 County Sacramento Distance from roadway 27 m Average Daily Traffic 200 Vehicles/Day (Estimated)

Ground Cover Vegetated Representative Area (MSA) Sacramento

-- Arden

- Arcade

-- Roseville,

CA2013 Annual Monitoring Network Plan July 1, 2013

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Page | 57 

### B.11 Sacramento Health Dept

- Stockton Blvd

According to old documentation, t his PM monitoring site has been in existence

since the late 1950s . This site measures PM

- 10 SSI, PM

- 10 TEOM, and PM

- 2.5

FRM.

Site Name Sacramento Health Department

- Stockton

Blvd.

AQS Site No. 06

- 067

- 4001 Geographic Coordinates 38.556326°,

- 121.458499° (WGS84)

Location Rooftop in urban area located 2 miles east

southeast of downtown Sacramento.

Address 2221 Stockton Blvd, Sacramento, CA 95817 County Sacramento Distance from roadway 46 m Average Daily Traffic 28,090 Vehicles/Day (City of Sacramento, 2005)

Ground Cover Rooftop (surrounding area is paved) Representative Area (MSA) Sacramento

-- Arden

- Arcade

-- Roseville, CA2013 Annual Monitoring Network Plan July 1, 2013

Page | 582013 Annual Monitoring Network Plan July 1, 2013

Page | 59 

### B

. 12 Sacramento

- 1309 T Street

The Sacramento

- 1309 T Street site is operated by the California Air Resources Board/Monitoring and Laboratory Division/ Special Purpose Monitoring Section.

This site has been in existence since 1989.

This middle scale SLAMS air monitoring site measures O 3 , NO 2 , PM 2.5 FRM, Speciated PM 2.5 , PM 2.5 BAM, PM 10 SSI, WD, WS, TMP, RH, and Atmospheric

Pressure.

Site Name Sacramento

- 1309 T Street

AQS Site No. 06

- 067

- 0010 Geographic Coordinates 38.558333°,

- 121.491944 (NAD27)

Location Residential area located in downtown

Sacramento

Address 1309 T Street, Sacramento, CA 95814 County Sacramento Distance from roadway 30 m Average Daily Traffic 3,102 Vehicles/Day (City of Sacramento, 2009)

Ground Cover Rooftop site (residential area is paved) Representative Area (MSA) Sacramento

-- Arden

- Arcade

-- Roseville, CA2013 Annual Monitoring Network Plan July 1, 2013

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Page | 63 

### Appendix C Near

- Road NO 2 

### Monitoring

Introduction

In 2010, U.S. EPA promulgated new nitrogen dioxide (NO 2 ) monitoring requirements. Local agencies are required to install and operate new near

- road monitoring stations where hourly maximum NO 2 emissions are expected. Deployment deadline revised on March 7, 2013, (EPA Docket ID EPA

- HQ

- OAR

2012

- 0486) requires the first tier of near

- road monitoring site, which includes the

Sacramento

— Arden

- Arcade

— Rosevi lle CBSA, to be operational by January 1,

2014 . The Sacramento CBSA is required to have one near

- road NO 2 monitoring site according to the population and traffic criteria given in Appendix D to 40 CFR

58. The Sacramento CBSA has a population of 2.2 millio n (2010 U.S. Census count) and annual average daily traffic (AADT) count of 246,000 on the most travelled road (2011 Caltrans count) . The District will install the near

- road monitoring site and have it operational by January 1, 2014.

To determine the loc ation with the maximum NO 2 emissions, the top ten sites with the highest number of cars and trucks traffic were identified, see Figure C

- 1. Each of these locations was reviewed according to the guidelines provided by

U.S. EPA in the Near

- Road NO 2 Technical Assistance Document (TAD). For example, annual average daily traffic (AADT) , number of heavy duty trucks, site characteristics, and other logical issues are among the factors considered. The final site selection meets the probe and siting crit eria provided in Appendix D and

E to 40 CFR Part 58.

Location

Through a series of siting and guideline review, which are discussed in the following sections, the Districts determines that a site on Bercut Dr. in

Sacramento (38.593328 ° N,

- 121.503728 ° W) i s the best location to meet near

road NO 2 monitoring goals. Located less than one mile northeast of Downtown
Sacramento, Bercut Dr. is nearly parallel to Interstate 5 (I

- 5) but is not a frontal

road , as traffic from I

- 5 has no direct access to Bercut Dr. The closest major

intersection to the potential site is Richards Blvd to the north, which has on and off ramps to I

- 5

. This site does not have any distinguish feature that makes the site unique so that the pollution measured is representative to other n ear

- road

locations in the CBSA.

If this site is approved as a near

- road monitoring site, the District would partner with California Department of Transportation (Caltrans) and utilize its building on
Bercut Dr. to shelter monitoring equipment. Note that this site is 250 feet north of the old site that was presented in the 2012 Annual Network Plan. Figure C

- 2,

C

- 3, C

- 4, and C

- 5 show location and ground view of the potential site.2013 Annual Monitoring Network Plan July 1, 2013

Page | 64 Figure C

- 1

Map of Top Potential Near

- Road Air Monitoring Sites

P ARTIAL SCREENSHOT OF G OOGLE M AP2013 Annual Monitoring Network Plan July 1, 2013

Page | 65 Figure C

- 2

Location of Bercut Dr.

P ARTIAL SCREENSHOT OF G OOGLE M AP2013 Annual Monitoring Network Plan July 1, 2013

Page | 66 Figure C

- 3

Location of Potential Site on Bercut Dr.

P ARTIAL SCREENSHOT OF G OOGLE M AP2013 Annual Monitoring Network Plan July 1, 2013

Page | 67 Figure C

- 4 Ground View of Potential Site, Looking toward WSW

Traffic Data

The site on Bercut Dr. would monitor NO 2 emissions from I

- 5. The 150 block of

Bercut Dr. is located north of I Street on I

- 5 and south of Richards Blvd. I

- 5 is a major highway that runs parallel to the West Coast. In addition to linking with two regional highways, it also links with Interstate 80, a transcontinental highway. A map was shown in Figure C

- 1.

Although AADT at the Bercut Dr. site ranks #9 in t he region, it ranks #1 in terms of fleet equivalent (FE) AADT. The 2011 latest statistics maintained by the Traffic Data Branch of Caltrans, AADT on this targeted roadway is 186,000, of which 18,000 is heavy duty truck traffic. FE AADT is a quantitative way to compare NO 2 emissions between roadways with different fleet mix. It is calculated with the heavy duty trucks vs. non

- heavy duty vehicles emissions ratio. According to the EMission FACtors (EMFAC 2011 ) model developed by

California Air Resource Boa rd in 2011, heavy duty trucks and non

- heavy duty vehicles produce 9.65 and 0.562 oz of NOx per vehicle per day, respectively, for scenario year 2010 in Sacramento County. The emission ratio is calculated and
rounded to 17. At this ratio, the Bercut Dr. s ite is estimated to have 17% more

NO 2 emissions than the next highest location. If the national default emission ratio, 10, is used to calculate the FE AADT, this site would still rank the highest in FE AADT, which is 16% more emissions than the next high est location.

Level of service (LOS) is another important factor considered. In the Transportation Corridor Concept Report (TCCR) prepared by Caltrans in 2010, LOS on Interstate 5 north of I Street is rated ―F‖, the most congested condition. In April 2 012, Sacramento Council of Government, the regional transportation project coordinator, adopted future construction projects in its Metropolitan2013 Annual Monitoring Network Plan July 1, 2013

Page | 68 Transportation Plan 2035. The plan includes the construction of two high occupancy vehicle lanes, one in each direction, north of I St. on Interstate 5 by 2035. Despite the additional lanes, the TCCR forecasts the LOS to remain at ―F‖ for the next twenty years.

Table C

- 1 details the AADT, fleet equivalent AADT, its ranking, and level of service (LOS) of the top ranking sites in this CBSA. For brevity, only potential sites among the highest ranked AADT or FE AADT are listed. Table C

- 2 details the NOx model emission in Sacramento County for calculation of emission ratio.

Table C

- 1 AADT of Top Ranking Roadway s in Sacramento CBSA

Route Direction Location AADT AADT Rank Trucks FE AADT (ER. = 10) FE AADT Rank

(ER. = 10) FE AADT

(ER. = 17) FE AADT Rank

(ER. = 17)
LOS

I

- 5 N. of I St. 186K 9 18K 347K 1 475K 1 F

I

- 5 S. of Jct. Rte. 80 159K 18 15K 296K 4 406K 2 F

SR99 N. of Florin Rd. 179K 10 12K 283K 7 367K 3 F

SR99 S. of Jct. Rtes. 50/51/5 212K 5 10K 298K 2 367K 4 F

I

- 5 S. of Jct. Rte. 50 143K 29 14K 267K 12 365K 5 F

SR65 N. of Jct. Rte. 80 (Placer Cnty) 104K 43 16K 245K 20 358K 6 D

SR99 N. of Fruitridge Rd. 191K 8 10K 282K 8 354K 7 F

I

- 5 N. of Jct. Rte. 80 152K 24 12K 263K 13 351K 8 E

I

- 80 E. of Jct. Rte. 51 213K 4 8K 288K 6 347K 9 F

SR5 1 W. of Jct. Rte. 160 West 117K 36 14K 245K 21 347K 10 F

SR

- 50 E. of Jct. Rtes. 51/99 216K 3 8K 288K 5 346K 11 F

SR

- 50 E. of 65th St. 206K 6 8K 281K 9 341K 12 F

SR

- 50 E. of Jct. Rte. 160

15th/16th St 246K 1 6K 297K 3 338K 13 F

SR

- 50 W. of 65th St. 200K 7 8K 275K 11 334K 14 F

I

- 80 E. of Antelope Rd. 168K 15 10K 259K 16 332K 15 F

SR99 S. of Fruitridge Rd. 172K 14 10K 260K 14 331K 16 F

I

- 80 W. of West Jct. Rte. 50 (Yolo Cnty) 150K 26 11K 249K 18 329K 17 D

I

- 80 E. of Greenback Ln. 179K 10 9K 260K 15 324K 18 F

SR

- 50 E. of Jct. Rte. 5 226K 2 6K 280K 10 323K 19 F

SR99 N. of Mack Rd. 161K 17 10K 248K 19 317K 20 F

I

- 5 N. of Pocket/Meadowvie

w Rds. 101K 45 13K 221K 31 317K 21 F

SR99 S. of Stockton Blvd. 153K 23 10K 241K 23 312K 22 F

I

- 5 S. of Jct. Rte. 99 North 108K 42 12K 220K 32 310K 23 E

SR

- 50 E. of Jct. Rte. 16 179K 10 8K 250K 17 306K 24 F

I

- 80 E. of Atlantic St. (Placer Cnty) 157K 21 9K 238K 24 303K 25 F

I

- 80 W. of Riverside Dr. (Placer Cnty) 165K 16 9K 242K 22 303K 26 F

I

- 80 W. of Richards Blvd. (Yolo Cnty) 125K 33 11K 224K 29 303K 27 D

SR99 N. of Stockton Blvd. 130K 32 10K 223K 30 298K 28 F

I

- 80 W. of Jct. Rte. 65 (Placer Cnty) 147K 27 9K 229K 28 294K 29 F2013 Annual Monitoring Network Plan July 1, 2013

Page | 69 Table C

- 2

Model NO

x Emission for Sacramento County

EMFAC 2011

2010 Estimated Annual Emissions
EMFAC 2011 Vehicle Categories

Sacramento COUNTY , Sacramento Valley BASIN

Veh a Fuel # of NOX_TOTEX Emission

Rate Vehicles (Tons/day) (oz/d/V)

LDA GAS&DSL 474,531 5.719

LDT1 GAS&DSL 67,074 1.535

LDT2 GAS&DSL 162,705 3.440

MDV GAS&DSL 139,198 4.121

Total 843,508 14.82 0.562 H e a v y D u t y V e h i c l e s LHD1 GAS &DSL 39,537 5.683

LHD2 GAS&DSL 5,573 1.028

T6 Ag DSL 740 0.3099
T6 CAIRP heavy DSL 10 0.0060

T6 CAIRP small DSL 32 0.0173

T6 instate construction heavy DSL 245 0.1529

T6 instate construction small DSL 596 0.3546

T6 instate heavy DSL 1,759 1.090

T6 instate small DSL 4,312 2.529
T6 OOS heavy DSL 6 0.0034

T6 OOS small DSL 18 0.0099

T6 Public DSL 2,072 0.4451

T6 utility DSL 110 0.0210

T6TS GAS 3,023 0.4807

T7 Ag DSL 327 0.4426

T7 CAIRP DSL 449 1.504

T7 CAIRP construction DSL 15 0.0518

T7 NNOOS DSL 453 1.271

T7 NOOS DSL 164 0.5506

T7 other port DSL 8 0.0294

T7 POAK DSL 18 0.0582

T7 POLA DSL 0 0.0000

T7 Public DSL 522 0.2976
T7 Single DSL 339 0.4083

T7 single construction DSL 121 0.1463

T7 SWCV DSL 145 0.1345

T7 tractor DSL 438 1.180

T7 tractor construction DSL 91 0.1211

T7 utility DSL 19 0.0093

T7IS GAS 331 0.2007

Total 61,475 18.53 9.65

a Motorcycles, motorhomes, motor coaches, and buses are excluded from this calculation2013 Annual Monitoring Network Plan July 1, 2013

Page | 70 Physical Considerations for the Selected Site

Bercut Dr. Site is selected partly for its site characteristics. According to the

Near

- Road NO 2 TAD, there are four components to physical site characteristics to consider: roadway design, roads ide structure, terrain, and meteorology. Each of these components may have desirable or undesirable attributes that alter NO 2 concentration captured. The characteristics of Bercut Dr. Site are listed below.

• Roadway Design

– Interstate 5, north of I St., is elevated and can be divided into two portions: bridge and solid fill. The Bercut Dr. site is located next to the elevated roadway with solid fill and is 250 m away from the bridge portion to avoid enhanced dispersion effect. Maximum

NO 2 can be captured at this location for two reasons. First, the elevated roadway, approximately 5 m above surrounding ground level, with solid fill has a similar emissions profile as a flat roadway, which allows direct sampli ng. Also, the inlet probe will be placed slightly above roadway level, at 6 m, to minimize sample dispersion. At this height placement, the inlet probe also meets the Probe and Monitoring Path Siting Criteria as specified in 40 CFR Part 58.

• Roadside str ucture

– This portion of Interstate 5 does not have obstructions (i.e., sound wall) that funnels NO 2 downwind and prevents the capture of the highest NO 2 concentration. The District is working with Caltrans to remove short vegetation along the roadway to minimize any adsorption or reaction effect on NO 2

.

• Terrain

– Sacramento is located in a flat valley. Terrain does not present a challenge.

• Meteorology

– According to meteorological data observed at an airport
five miles south of Bercut Dr., Sacramento E xecutive Airport, prevailing

wind is at this location from the south

- southwest. Hence, the station

would be downwind of Interstate 5. Figure C

- 6 shows the wind rose compiled by Western Regional Climate Center using 30 years of

measurement taken at the ai rport since 1983.

Bercut Dr. Site has no undesirable attributes that would potentially decrease the

maximum NO 2 captured. Electric power and phone service are also readily accessible. The site can also be easily accessed by a site operator. The Distric t is currently working with Caltrans to d raft a lease agreement for the site

.

The sampling inlet probe will be placed approximately 20 m from the closest highway lane. This is as close as practical due to the obstruction of the slope of

the solid

- fill, e levated roadway and a drainage canal that is parallel to the highway. The probe placement meets the recommendation provided in the Near

Road NO2 TAD as well as the Near

- Road NO2 Siting Criteria in Appendix E to 40 CFR, Part 58. A complete matrix among th e top ten FE AADT sites is provided in Table C

- 3 and C

- 4.2013 Annual Monitoring Network Plan July 1, 2013

Page | 71 Figure C

- 5 Wind Rose Representative of Bercut Dr.

G RAPHICS PROVIDED THROUGH THE COURTESY OF W ESTERN R EGIONAL C LIMATE C ENTER2013 Annual Monitoring Network Plan July 1, 2013

Page | 72 Table C

- 3

Complete Matrix of Top Potential Near

- Road Site (#1

- 5)2013 Annual Monitoring Network Plan July 1, 2013

Page | 732013 Annual Monitoring Network Plan July 1, 2013

Page | 74 Table C

- 3

Complete Matrix of Top Potential Near

- Road Site (#6

- 10 )2013 Annual Monitoring Network Plan July 1, 2013

Page | 752013 Annual Monitoring Network Plan July 1, 2013

Page | 7 6 Population Exposure

As suggested by the TAD, Bercut Dr. Site was selected despite having limited population exposure to NO 2

. The TAD states that population exposure should only be used if two identical sites existed. Current land use around Bercut Dr. is zoned primarily for commercial use. There is limited residence in the vicinity.
However, within the next 3

- 5 years, City of Sacramento will develop 240 acres of land nearby to include medium density housing. Population exposure is considered, but this factor is relatively minor compared to the fleet equivalent AADT (FE AADT).

Conclusion

The Bercut Dr. site has the highest number of heavy duty truck traffic in the region that contributes to the highest FE

- AADT and emissions compared to other

near

- road locations. Because of the site characteristic at Bercut Dr., it allows direct sampling of NO 2 emissions The refore, this site is likely to measure the highest NO 2 concentration in Sacramento

— Arden

- Arcade

- Roseville CBSA.2013 Annual Monitoring Network Plan July 1, 2013

Page | 77 

### Appendix D Copy of Approval Letter to Close Sacramento

- El

Camino/Watt (AIRS Site #06

- 067

- 0007)